5.11 - COLLISIONS
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Practice Questions
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Define momentum.
💡 Hint: Think about what factors affect how fast something is moving.
What is the difference between elastic and inelastic collisions?
💡 Hint: Consider whether energy is conserved in each case.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does momentum depend on?
💡 Hint: Think of the factors influencing how fast an object moves.
In an elastic collision, is kinetic energy conserved?
💡 Hint: Recall the characteristics of elastic collisions.
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Challenge Problems
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Two balls of masses 3 kg and 5 kg collide elastically, with the 3 kg ball moving at 4 m/s and the lighter ball at rest. Find their velocities after collision.
💡 Hint: Set up simultaneous equations using p1i = p1f + p2f and K1i + K2i = K1f + K2f.
A car (mass = 800 kg) collides inelastically with a stationary truck (mass = 1200 kg). If the car's speed before collision is 15 m/s, what is their common speed after collision?
💡 Hint: Remember that conservation of momentum must hold.
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